Essential safety feature: A GFCI (Ground Fault Circuit Interrupter) provides continuous ground fault protection that instantly cuts power when a ground fault is detected, preventing electrocution and electrical fires. The GFCI outlet cannot be reset until the ground fault is eliminated Thinner Dseign: The ultra-thin design frees up more operating space inside the electrical box, making complex wiring and multiple line connections easier, while also facilitating subsequent line inspection and maintenance LED indicator status: ON - GFCI receptacle is powered, in working or testing mode. OFF - malfunctioning, mis-wired or power is not being supplied to the outlet Durable and safe construction: Unbreakable polycarbonate material ensures electrical safety and is fireproof with superior strength and durability Easy installation: Designed for easy installation with back and side wiring, gfi electrical outlet cannot be reset if mis-wired. Wallplates and screws included. Caution: Do not